ML15222A251

Inservice Inspection Program Third Interval, Third Period, Refueling Outage 20 Owner'S Activity Report

ML15222A251
Person / Time
Site:	Wolf Creek
Issue date:	07/28/2015
From:	Koenig S Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 15-0062
Download: ML15222A251 (8)

Text

W LF CREEK r'NUCLEAR OPERATING CORPORATION Steven R. Koenig Manager Regulatory Affairs July 28, 2015 RA 15-0062 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: Inservice Inspection Program Third Interval, Third Period, Refueling Outage 20 Owner's Activity Report Gentlemen:

Enclosed is the Wolf Creek Nuclear Operating Corporation (WCNOC) Owner's Activity Report (Form OAR-I, Report Number WCRE-16, 13-P3-RF20) for inservice inspections performed after Wolf Creek Generating Station's (WCGS) nineteenth refueling outage (RF19) that concluded on May 13, 2014, and up to, and including, WCGS' twentieth refueling outage (RF20) that concluded on May 3, 2015. RF20 was the second refueling outage of the third period of the third interval of the WCNOC Inservice Inspection Program. The enclosed report is submitted pursuant to the requirements of paragraph IWA-6240 of the 1998 Edition through 2000 Addenda of Section Xl of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and ASME Code Case N-532-4.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4041 or Mr. Bill Muilenburg at (620) 364-4186.

Sincerely, for Steven R. Koenig SRK/rlt

Enclosure:

cc: M. L. Dapas (NRC), w/e C. F. Lyon (NRC), w/e N. H. Taylor (NRC), w/e/- * ) -

Senior Resident Inspector (NRC), w/e P.O. Box 411 I Burlington, KS 66839 I Phone: (620) 364-8831 An Equal Opportunity Employer M/F/HC/VET

Enclosure to RA 15-0062 Wolf Creek Nuclear Operating Corporation (WCNOC)

Owner's Activity Report (Form OAR-I, Report Number WCRE-1 6, 13-P3-RF20)

(6 pages)

FORM OAR-I OWNER'S ACTIVITY REPORT Report Number WCRE-16. 13-P3-RF20 Plant Wolf Creek Generating Station, 1550 Oxen Lane Northeast. Burlington, Kansas 66839 Unit No. 1 Commercial service date 9-3-1 985 Refueling outage no. RF-20 (if applicable)

Current inspection interval 3rd.

list, 2nd, 3rd, 4th, other)

Current inspection period 3rd list. 2nd, 3rd)

Edition and Addenda of Section XI applicable to the inspection plans 1998 Edition through 2000 Addenda Date and revision of inspection plans WCRE-16 Rev. 9. dated 2-6-13 Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans same Code Cases used: See Attachment 1 lit applicable)

CERTIFICATE OF CONFORMANCE I certify that (a) the statements made in this report are correct; (b) the examinations and tests meet the Inspection Plan as required by the ASMIE Code, Section Xh; and Cc)the repair/replacement activities and evaluations supporting the completion of RF-20 conform to the requirements of Section Xl.

(refueling outage number)

Signed Engineer Date 7/16/2015 Owner or Owner's Designee. Title CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of Kansas and employed by The Hartford Steam Boiler Inspection and Insurance Co. of Connecticut have inspected the items described in this Owner's Activity Report, and state that, to the best of my knowledge and belief, the Owner has performed all activities represented by this report in accordance with the requirements of Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the repair/replacement activities and evaluation described in this report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection.

___________________Commissions NB 13573 ANI KS 657 Inspector's 5ignat* 7 Notional Board, State. Province, and Endorsements Date * /( /'

OAR-I I3-P3-RF-20 Page 1 o.[6

TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Item Description Evaluation Description Category and Item Number D-B, D2.10 EF-054-HBC-8 A through-wall leak was identified. An evaluation utilizing the methodology of ASME Code Case N-5 13-2 was performed for continued operation. The evaluation determined that structural integrity was intact and that the piping could remain in operation in the current condition until the scheduled repair during MC2O.

Periodic monitoring prior to the repair was required.

D-B, D2.10 EG-210-ITBC-24 A through-wall leak was identified. An evaluation utilizing the methodology of ASME Code Case N-513-2 was performed for continued operation. The evaluation determined that structural integrity was intact and that the piping could remain in operation in the current condition until the scheduled repair during RF20.

Periodic monitoring prior to the

____________________repair was required.

D-B, D2.10 SGNO1A, SGN01B, SGN01C, An evaluation was performed to SGNO1D address the operability of the Containment Air Coolers. The operability was in question based on an operational history of leakage. Tube failure was occurring as a result of under deposit pit corrosion that subsequently led to tube leaks.

Hydrostatic testing was performed on the tube bundles using a test pressure determined by utilizing corrosion rates and the required wall thickness.

Based on the hydrostatic testing results, the evaluation determined that the Containment Air Coolers were able to perform their design function until replacement in RF2O.

OAR-I 13-P3-RF-20 Page2of6

TABLE 2 OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUJED SERVICE ABSTRACT Code Item Description of Work Date Repair/Replacement Class Description Completed Plan Number (Note 1) 3EKJ03B Cut, realign, and perform fit-up/welding as 5/18/15 2014-207 necessary to support re-aligning the pipe and fittings on KJ148HBC-8" to better align the Garlock coupling to within allowable tolerance.

3 Containment 3Cooler Replace 12 cooling coils with new coils and 5/19/15 2014-096 SGN01A replace all the cooling coil mounting bolts and lock nuts with new material.

3 Containment 3Cooler Replace 12 cooling coils with new coils and 5/19/15 2014-097 SGN01 B replace all the cooling coil mounting bolts and lock nuts with new material.

Containment 3Cooler Replace 12 cooling coils with new coils and 5/19/15 2014-098 replace all the cooling coil mounting bolts and SGN01C lock nuts with new material.

3 Continent Replace 12 cooling coils with new coils and 5/19/15 2014-122 Cooler replace all the cooling coil mounting bolts and SGN01 D lock nuts with new material.

2 Residual Heat Replaced damaged pump diffuser, seal 5/12/15 201 5-032 Removal Pump housing, and tack weld bearing retainer cap PEJ~lA screws.

3 Spent Fuel Installed welded tube plugs in the inlet and 6/17/15 2014-003 Cooling HX outlet for 3 tubes 1-1, 4-1, and 5-1. The outlet of tube 1-1 had a 10' tube stake welded to the EECO1B inner end of the plug and installed in the tube.

3 ALV0002 Replaced valve with a like-for-like valve due to 2/3/14 2012-044 8" Ceck alve ID pitting and the valve dimensional criteria was out of tolerance 3 ESW Piping Installed a 2" encapsulation over degraded 2/19/14 201 3-104 area on spool EF03-S009/142 due to ID EG205HBC-24 ptig 3EEC01A Installed welded tube plugs in inlet and outlet 8/5/13 201 3-1 09 tube 1-1. Installed 10' tube stake welded to Fuel Pool Cooling the plug and installed outlet tube 1-1.

3PEG01A Performed base metal repairs of eroded areas 9/23/13 2013-219

_____ CCWPump on the inside of pump casing.

OAR-i1 13-P3-RF-20 Page 3 of 6

Code Item Description of Work Date Repair/Replacement Class Description Completed Plan Number (Note 1) 3 EF1 29HBC-24 Installed 6" encapsulation on minimum wall 7/1/13 2013-295 violation indications M-1 3EF04-EF1 29HBC-24-BAUX-04A and M-1 3EF04-EF1 29HBC24-B001A on line EF129HBC-24 3 EFHV0092 Replaced 3" Motor Operated Gate Valve due 4/14/14 2014-042 to over torqueing of the operator.

3 A Emerg Diesel Realigned piping to within specifications for 6/10/15 2014-058 EKJOA HX flex coupling.

3 ESW Pre Lube Replaced the Pre-Lube Storage Tank with a 6/17/15 2014-050 new Design as approved by CCP 14727.

TEF~lA Replace a portion of spools EF173HBC-2, EF184HBC-2 and EF192HBC-2. Tank replaced due to ID Pitting.

3 A Emerg Diesel Realigned piping to within specifications for 3/21/15 2014-060 KJO49BC..8 flex coupling between EKJ04A and EFV0053.

3 ESW Piping Installed 2" encapsulation over minimum wall 6/25/2015 2014-092 defect on piping spool EF04-S006/1 33 due to E~l 92BC-24 ID pitting.

3 CCW Cooling Performed base metal repairs of erode areas 6/10/15 2014-1 54 PEGOID in the upper and lower pump casing.

3 EG03R0261 41 Replaced existing sway strut with new from 6/17/15 2012-087 warehouse stock.

2 EGV0204 Performed base metal repair on three worn 5/19/15 2015-057 areas on the valve body and weld build-up on worn area on portion the travel stop of disc arm to return the valve to full compliance with the original design.

1RBB01 Installed canopy seal weld clamp on capped 6/15/15 2015-044 latch housing penetration No. 20.

3 EF1 41 HBC-4 Replaced 1-EF-14-S-008/341 spool for min 5/19/15 2015-035 wall violation (like-for-like).

1 PSA-1/2 S/N Replaced damaged housing and insert 1/21/15 2014-1 92 15022 assembly on PSA-1/2 S/N 15022 snubber with new replacement part.

I PSA-1/4 S/N Replaced damaged housing and insert 1/21/15 2014-1 93 16449 assembly on PSA-1/4 S/N 16449 snubber with new replacement part.

OAR-I I3-P3-RF-20 Page 4 of 6

Code Item Description of Work Date Repair/Replacement Class Description Completed Plan Number (Note 1) 1 PSA-1/4 S/N Replaced damaged torque carrier and shaft 1/21/15 2014-194 24289 assembly on PSA-1/4 S/N 24289 snubber with new replacement part.

1 PSA-i00 S/N Replaced damaged telescoping cylinder on 1/21/15 2014-180 1390 PSA-1 00 S/N 1390 snubber with new replacement part.

I PSA-3 S/N 8435 Replaced damaged bearing retainer nut on 1/21/15 2014-1 81 PSA-3 S/N 8435 snubber with new replacement part.

3 EF04-S006/131 Installed 2" encapsulation over degraded area 6/25/15 2014-092 Ml13EF04-EF1 29HBC24-BGWT-84-02 on pipe spool EF04-S006/1 33.

3SGN01C Removed cooling coil on SGN01C from 5/28/14 2014-063 service due to leak. The inlet and outlet flanges from the cooling coil were cut and blind flanges were installed.

3SGN01B Removed cooling coil on SGN01B from 6/18/14 2014-064 service due to leak. The inlet and outlet flanges from the cooling coil were cut and blind flanges were installed.

1 PSA-35 S/N Replaced damaged telescoping cylinder on 6/17/15 2014-204 11690 PSA-35, S/N 11690, snubber with new replacement part.

3 SGN01D Removed leaking coil S/N 906-897-D4 and 5/28/14 2014-043 install S/N 906-897-D2 replacement cooling coil in top north bank in SGN01 D cooler.

3 EF06C0551 25 Replaced existing Corner Lada Strut (item 3 6/29/15 201 3-059 on design drawing M-O6EF06C055125) with new ITT Grinnell (figure 211 )

3 EG210HBC-24 Replaced all of spool EF04-S009/141 on line 6/23/15 2014-106 EG2I0HBC-24 in accordance with CCP 14266.

BECHTEL POWER CORPORATION 3 EFO54HBC-8 replaced EF02-S029/124, EF02-S030/124 62/0421-6 and a portion of EF02-S031/124 on line EF-054HBC-8.

Note 1: The date completed is the date the Form NIS-2A was certified.

OAR-I 13-P3-RF-20 Page 5 of 6

ATTACHMENT 1 Code Cases used:

N-460 N-513-2 N-532-4 N-533-1 N-552 N-566-2 N-616 N-623 N-624 N-639 N-652 N-658 N-685 N-686 N-695 N-700 N-706 OAR-i 13-P3-RF-20 Page 6 of 6